Skull+

Skull+ is a Skull-derivative with added support for input and subroutines. It was created by Magnus Holm (User:Judofyr) and is almost backward compatible with regular Skull (shouldn't be hard to support both languages). The language is in active development and the spec listed here may change (but will always work in Sofa Skull). If someone else is also building a Skull+-interpreter/compiler contact me and I'll move any new experimental features to the discussion-page before changing this one.